Switch-controlling mechanism for self-rake reapers.



L. HOLLAND-LUZ. SWITCH CONTROLUNG MECHANISM FOR SELF RAKE: REAPERS.

APPLICATION FILED JAN.2,1\912.

1327388, Patented May 29, 1917;

5'3HEETSSHEET l- I 81 21- I I L. HOLLANDQLETZ. SWITCH CONTROLLINGMECHANISM FOR SELF RAKE REAPERS.

APPLICATION FlLED JAN.2, I912- 1,%9?,788. Patented May 29,1917.

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L. HOLLAND-LUZ.

SWITCH CONTROLLING MECHANISM FOR SELF RAKE REAPERS.

APPLICATION FILED JAN.2,1912.

Patented May 29, 1917.

5 SHEETS-SHEET '3- Illlllllllllli L HOLLAND-LUZ. SWITCH CONTROLLINGMECHANISM FOR SELF BAKE HEAPERS APPLICATION FILED JAN.2. I912.

1,297,788, Patented May 29, 1917.

ZJ- $666k: fior pnrrnp srarns iegrnnr orrren.

LUD HOLLAND-LETZ, OF CHICAGO, ILL-IIIGIS, ASSIGNOR TO INTERNATIONAL HAR-VESTER COMPANY OF NEW JERSEY, A CORPORATION OF NEW JERSEY.

SWITCH-CONTROLLING MECHANISM FOR SELF-RAKE REAPERS.

memes.

Application filed January 2, 1912.

To all whom it may concern:

Be it known that I, LUD HOLLANDLETZ, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Switch-ControllingMechanism for Self-Rake Reapers, of which the following is aspecification.

My invention relates to switch controlling means whereby the switch willbe automatically released at predetermined intervals for the purpose ofpermitting the rake to sweep the platform and deliver the ac' cumulatedgrain therefrom, combined with means whereby the operation of the automatically operating mechanism may be temporarily suspended when it isdesired to hold the grain upon the platform while turning a corner inthe field and whereby the opening of the switch may be at all timesunder the control of the operator regardless of the position of theautomatically operating mechanism; the object of the invention being toprovide a mechanism that will be positive in its action and the partsthereof readily adjustable in a manner to compensate for wear thereonthat would otherwise render the mechanism inoperative. These objects areattained by means of mechanism, one embodiment of which is illustratedin the accompanying drawings, in which Figure 1 represents a top planview of part of a rake stand having my invention embodied in itsconstruction;

Fig. 2 is a side elevation of Fig. 1 as looking toward the upper end ofthe sheet;

Fig. 8 is a side elevation of Fig. 1 as looking toward the left-handside of the sheet;

Fig. 4: is a view similar to Fig. 2 and showing the various operativeparts in a different position of adjustment;

Fig. 5 is a view similar to Fig. 4iand illustrating a difierentadjustment of the operative parts;

Fig. 6 is a side elevation of Fig. 1, designed to illustrate themovement of the switch controlling mechanism;

Fig. 7 is a side elevation, partly in section, of Fig. 1, as lookingtoward the bottom of the sheet;

7 Fig. 8 represents a side elevation of a re- Specification of LettersEatent.

Patented May 29, 191?.

Serial No. 689,025.

ciprocating pawl arm forming part of the switch controlling mechanism;

Fig. 9 is an end elevation of Fig. 8;

Fig. 10 is a perspective view of a toothed index sector cooperating withthe pawl arm in the operation of the mechanism and show ing the mannerof mounting it in relation to other parts of the associated mechanism;

Fig. 11 is a top plan view of a switch latch;

Fig. 12 is a side elevation of Fig. 11;

Fig. 18 represents an end view of part of Fig. 11; and

Fig. 1a is a detail in section of part of Fig. 1 along line i l-13.

The same reference characters designate like parts throughout theseveral views.

1 represents part of a rake stand, 2 a vertically arranged rake drivingshaft journaled therein, 3 a rake controlling cam mounted upon thestand, the cam having a common form of pivoted switch 4L adapted to openor close a passageway 5 separating one portion of the cam from anotherin a manner whereby the rakes are either raised to pass over the grainupon the platform of a reaper or permitted to sweep across the platformin a manner to deliver the grain therefrom. The switch 4 is providedwith a vertically arranged spindle portion 6 that is j ournaled in adepending sleeve 7 integral with the cam, a head portion 8 adapted toswing laterally to open or close the passageway for the rollers that areusually mounted upon the rake carrying arms, a heel portion 9 thatprojects into the passageway within the path of the rollers when theswitch is in an open position, a collar 10 secured to the lower end ofthe spindle and provided with a hook portion 11 that receives one end ofa spring 12 that is coiled around the lower end of the sleeve and havingthe opposite end thereof connected with a fixed part of the mechanismwhereby the spring is operative to normally open the switch and permit afree passage of the rollers upon the rakes through the passagewaybetween the two portions of the rake guiding cam. The switch is alsoprovided with a depending stem portion 13 having a laterally projectingwing portion 14L at its lower end, the stem extending through an openingin the cam plate.

Secured to the rake driving shaft and rotatable therewith, is a multiplethrow cam member 15, the number of throws being four to correspond withthe number of rakes designed to be used, the throws being arranged atangles of 90 apart. 16 represents a bell crank lever having a verticallyarranged barrel portion 17 whereby the lever is pivotally connected withthe rake controlling cam by means of a pin 18, one arm of the leverbeing provided with a roller 19 adapted to engage the multiple throw cam15 in a manner to rock the lever upon its axis when the cam is rotated,the remaining arm of the lever being provided with an opening that adjustably receives an eye bolt 20. 21 represents a transversely arrangedrock shaft journaled in depending ear members 22 at opposite sides ofthe rake controlling cam, one end of the shaft being provided with acrank arm 23. 24 represents a toothed index sector secured to theopposite end of the shaft by means of a clamping bolt 25, the sectorbeing provided with a smooth wing portion 26 approximately concentricwith the axis thereof, and a laterally projecting rim portion 26 in linewith the roots of the teeth. 27 represents a reciprocating pawl memberhaving at one end thereof a tooth 28 that is adapted to engage with theteeth upon the index sector 24, and a depending stem portion at theopposite end thereof that is provided with a hook portion 29 at itslower end, whereby the reciprocating pawl member 27 may be connectedwith the eye bolt 20 in a manner to impart a reciprocating movement tothe pawl member as the rake driving shaft and the multiple throw cammember 15 secured thereto are rotated. The cam member 15 imparts aswinging movement to the bell crank lever 16 and thereby actuates thepawl member 27. The bell crank lever moves the pawl in one direction,and the pawl member is provided with a barrel portion 30 upon its upperside that receives one end of a compression spring 31, the opposite endof the spring engaging with a depending ear 32 integral with the rakecam, the spring being operative to actuate the pawl member in anopposite direction to that imparted by the bell crank lever. The pawlmember is also provided with a laterally extending finger portion'33that engages the lower'surface of a web portion 34 forming part of thebell crank lever in a manner to limit a forward swinging movement of thepawl member relative to the bell crank lever, and a web portion 35extending laterally from the lower side of the barrel portion and thendownward in a manner forming a channel 36 at one side of the pawl memberthat is closed along its upper side and open at the ends and bottomthereof. 37 represents a gravity pawl member having a pivotal connectionwith a fixed part of the mechanism and adapted to engage with the teethof the index sector successively as it is actuated by the reciprocatingpawl member in a manner preventing a retrograde rocking movement of saidindex sector 24, the gravity pawl 37 being provided with a fingerportion 38 that is received by the channel 36 of the reciprocating pawlmember, and a vertically arranged ear portion 38 that engages with therear end of the reciprocating pawl member in a manner to limit arearward movement thereof when actuated by the compression spring 31. 39represents a rake switch latch provided at one end thereof withvertically arranged ear members 40. The ear members 40 are spaced apartand provided with laterally arranged openings therein whereby the latch39 is pivotally mounted upon the rock shaft 21 coaxially with the indexsector 24 and adapted to engage with the end of the wing portion 26 uponthe index sector 24 when the latter is rocked to near the limit of itsmovement in one direction to the right, as shown in Fig. 6. The switchlatch 39 extends from the rock shaft 21 toward the rake switch 4, andthe end thereof is provided with a curved head portion 41 that isarranged concentric with the axis of the rake switch4and that rests uponthe wing portion 14 of the rake switch 4 in a manner whereby the freeend of the latch 39 is supported. The head 41 of the latch 39 isprovided with a notch 42 at one side thereof permitting the latch todrop upon the wing portion 14 when the switch is turned to a closedposition in a manner whereby the shoulder of the notch 42 engages withthe wing portion 14 of the switch 4 and the switch is locked in itsclosed position until the latch is raised suflicient to release it fromengagement with said wing portion 14. The latch is provided intermediateits ends with a vertically arranged barrel portion 43 that is threadedto receive a bolt 44, the upper end of the bolt engaging with the lowerside of the gravity pawl 37 when the latch 39 is raised in a manner todisengage the gravity pawl 37 from the index sector 24, and at the sametime cause the finger 33 upon the reciprocating pawl member 27 to raisethe same out of engagement with the index sector 24. The switch latch 39is also provided with a downwardly and laterally extending arm 45 thatis adapted to engage with a hook portion 46 forming part of a swingingdetent 47 having one end thereof pivotally connected with a fixed partof the mechanism and provided with an arm 48 having the end thereofprovided with a laterally jprojecting lip portion 48 that rests upon therim 26 of the index sector 24. In Fig. 4 of the drawings this laterallyprojecting lip portion 48 forming part of the arm 48 of the detent 47,is shown as resting upon the rim portion 26 of the sector 24. 49represents a hand lever having its lower end pivotally connected with afixed part of the mechanism and its upper end extending withinconvenient reach of the operator. The lever engages with the crank arm23 of the rock shaft 21 in a manner to limit a rocking movement of saidshaft in a direction opposite to that imparted thereto by the operationof the reciprocating pawl, the shaft being rocked in a direction tocause the crank to engage with the lever by means of a spring 50 coiledaround said shaft and having one end thereof connected therewith and theopposite end of said spring connected with a fixed part of themechanism. The hand lever extends upward through a slotted opening 51formed in a laterally extended portion of the rake cam plate, the innerwall of the slot being provided with a series of notches that mayselectively receive the hand lever, the resiliency of the lever beingsufficient to retain it in engagement with the notches in a releasablemanner. The hand lever controls the range of movement of the rock shaftand index sector 24, the sector receiving a step by step movementimparted thereto by means of the reciproeating pawl, the intervalbetween the steps being properly timed with the rakes, and the numeralsplaced opposite the notches indicate the number of rakes that alternatein the operation of sweeping the grain from the platform.

In the operation of the mechanism when the hand lever 49 is moved to aposition to be received by the notch designated by 0, the spring 50 willrock shaft 21 in a direction to cause the crank arm 23 thereof to engagewith the lever and the index sector is thereby turned to the positionshown in Fig. 5, and the wing portion 26 of the index sector 24 iswithin the entire path of movement of the reciprocating pawl member 27and prevents the pawl member from engaging with the toothed portionthereof, and means are provided whereby the operator may bring thetoothed portion of the index sector 24 within the path of movement ofthe reciprocating pawl, said means comprising a sleeve 52 looselymounted upon the rock shaft 21, adjacent the index sector 24, and havinga finger 53 projecting longitudinally therefrom and adapted to engagewith the web portion of said sector, as shown in Fig. 10, in a manner toturn the index sector with the sleeve, the sleeve being turned by meansof a link 54, having one end thereof con nected with a laterallyprojecting car 55 integral with the sleeve, and the opposite end thereofprovided with means whereby it may be connected with a foot lever (notshown) within reach of the operator. The range of angular movement ofthe sleeve in either direction is limited by means of a longitudinallyarranged wing portion 56 thereon that engages with a portion of the rakecam 3, as shown in Fig. 14. The range of angular movement of the sleevein a forward direction is only sufficient to rock the index sector 24 toa position permitting the reciprocating pawl to engage with the rearmosttooth to the left, as shown in Fig. 6 in a manner to cause the wingportion 26 of the sector to engage with the switch latch 39 and rock itabout its axis, whereby its rear end is raised out of engagement withthe switch 4 and the switch is thrown open by the force of the spring12, permitting the roller carried by the rake arm to enter thepassageway between the two members of the rake controlling cam, theroller engaging with the heel of the switch 4 in a manner to return itto a closed position, and the switch latch drops by gravity as soon asthe notch therein is in position to receive the wing portion 14 of theswitch and the switch is thereby locked in its closed position,remaining in a closed position until the operator again manipulates thefoot lever, when the switch latch is raised by means of a rocking-movement of the index sector, which carries with it the gravity pawl37, releasing it from engagement with the index sector and permittingthe latter to return to its initial position as controlled by the crankarm 23 upon rock shaft 21 engaging with the hand lever. WVhen the handlever is moved to a position permitting it to be received by the notchdesignated by the numeral 1, the index sector is turned to the left tothe limit of its rocking movement (Fig. 4), and the recip rocating pawlwould continue to ride upon the wing portion of the sector the same asit would if the lever were received by the notch designated by 0, andnone of the rakes would sweep the platform; until the operator, by meansincluding the link 54, swings the index sector 24 to the right, as shownin Fig. 6, to the limit permitted by the wing 56, and when the pawlmember 27 engages the sector 24 and thereby operates the part 26 to liftthe switch lever 39. With the index sector 24 in the position indicatedthe swinging detent 47 is permitted to turn about the axis thereof forthe reason that the front end of the rim 26 carried by the index sector24, has been carried beyond the lip portion 48 at the end of arm 48, andthe latter may swing downward during the interval of time between theopening of the rake switch 4 and its closing by means of a passing rake,causing the hook portion of the detent 47 to engage with the arm 45 uponthe switch latch in a manner to suspend its operation, as shown in Fig.4, with the switch 4 open, in which position each rake will sweep theplatform. It is to be understood that the operator, after he hasadjusted the hand lever to notch number 1,

must manipulate the rod 54 and turn the index sector to a positionpermitting the reciprocating pawl to engage with the rearmost notchthereon to the left, as shown in Fig. 6, and thereby rock the sector andre lease the switch latch. It is also to be noted before the roller uponthe rake arm has caused the switch to move to its closing position theindex sector 24 has returned to its I initial position having the crankarm 23 engaging the hand lever 49 and the detent 47 is swung to positionto engage the latch 39 and retain it in an inoperative positionindefinitely, or until the operator again manipulates the link 54. Whenthe operator desires to suspend the operation of the rakes, as whenturning the corner of a field with the machine, he will swing the sector24 about the axis thereof to the right, as shown a in Fig. 6, as bymeans of the foot lever (not shown) which may be connected with the link54, releasing the detent 47 and permitting the switch latch 39 to holdthe switch 4 closed, and the switch 4 will remain closed until thesector 24 is permitted to return to its initial position with the crankarm 23 engaging the hand lever 49. The operator does not keep the footlever pressed, but releases it quickly, and the rake switch 4 willremain closed until he again swings the index sector 24 to the right, asshown in Fig. 6, so that the pawl 27 may engage therewith, when theswitch latch 39 will be released, and as the sector returns, under forceof spring 50, with the crank arm 23 engaging the hand lever 49 and thedetent 47 en gaging the latch 39, the raking action of the rakes will beresumed. The operator does not manipulate the hand lever 49 save when hewishes to change the automatic action of the mechanism. For the purposeof controlling the swinging movement of the switch 4 to an openposition, and to com pensate for wear upon the heel thereof by theaction of the rollers, an adjustable screw 57 is received by an openinin the rake cam member in a manner whereby the inner end thereof engageswith the switch as it is opened. The eye bolt 20 permits a longitudinaladjustment of the reciprocating pawl 27, and the bolt 44 may be adjustedto conpensate for wear upon the gravity pawl 37. The index sector isprovided with five teeth and the multiple cam with four throwscorresponding with the number of rakes. Each cam throw advances theindex sector one tooth or step. If the hand lever be received by thenotch designated by 6, the reciprocating pawl will engage successivelywith all of the teeth upon the index sector before the switch latch willbe disengaged, and as one rake passes the switch at each to and fromovement of the pawl, five rakes will pass the switch before it isopened and the sixth rake will sweep the platform. If the lever beplaced in the notch designated by numeral 5, then each fifth; if in 4,each fourth; if in 3, each third, and if in 2, each alternate rake willsweep the platform, and at all times the index sector 24 is under thecontrol of the operator through the sleeve 52 loose upon the rock shaft.

In the operation of the mechanism described, it will also be noted thatthe latch releasing means may also be reset another way, the sameoccurring when the toothed index sector 24 has been pulled around by thestep-by-step mechanism sufficiently to raise the latch 39 and releasethe switch, the depending portion 14 of the moving switch then engagingwith the inclined under surface of the latch head and raising the latterand thereby the bolt 44, which in turn raises the pawls 37 and 27 torelease the toothed sector so that it may again return to its initialposition and be ready to be again operated. It will also be noted thatdue to the provision of the improved adjustable stop 57, the range ofmovement of the switch may be controlled, and that it is possible tothereby correct the natural tendency of the rakes to rise in sweepingthe platform, ordinarily experienced when their bearings wear or whenthey strike heavy or bunched grain, this member 57 being adjustedinwardly to lower the rakes. It will further be noted that by this samemeans the sweep of the rakes relative to the plat.- form may be adjustedso that the rakes may be made to sweep a sagged or warped platform,adjustment of the member 57 inward or outward serving to true the rakesrelative to the platform through the action of the member 57 upon theswitch and the resultant action of the latter upon the rake rollers.Attention is also directed to the fact that through the provision of themem ber 57 access may also be obtained to the latch member 39 whendesired, as, for instance, when making repairs, it is only necessary forthe member 57 to be screwed outward and the switch to be pulled over toits extreme open position, to permit the latch 39 to be dropped downwardso that access may be readily had to the same.

While I have herein specifically described one embodiment of myinvention, it is to be understood that the form chosen is used forpurposes of illustration and that the same may be modified withoutdeparting from the spirit of my invention, it being my intention toinclude all such modifications within the scope of the appended claims.

What I claim as my invention, and desire to secure by Letters Patent,is:

1. In a reaper switch, a rake controlling cam, a pivoted switch forminga part thereof, and means whereby the range of movement of said switchmay be regulated.

2. In a reaper switch, a rake controlling cam, a pivoted switch forminga part thereof, and means carried by said cam whereby the range ofmovement of said switch may i be regulated.

3. In a reaper switch, a rake controlling cam, a pivoted switch forminga part thereof, and a member adjustably mounted on said cam and engagingsaid switch whereby the range of movement thereof may be regulated.

4c. In a reaper switch, a frame, a sector pivoted on said frame, aholding pawl for said sector pivoted on said frame, and means wherebythe range of movement of said holding pawl may be regulated.

5. In a reaper switch, a frame, a sector pivoted on said frame, aholding pawl for said sector pivoted on said frame, and independentmeans pivoted on the pivot of said sector and engageable with saidholding pawl whereby the range of movement there of may be regulated.

6.,In a reaper switch, a frame, a sector pivoted thereon, a switch latchpivoted thereon, a holding pawl for said sector pivoted thereon, andmeans intermediate said switch latch and said holding pawl whereby therange of movement of the latter may be regulated.

7 In a reaper switch, a frame, a sector pivoted thereon, a switch latchpivoted thereon, a holding pawl for said sector pivoted thereon, and anadjustable member carried by said switch latch and engageable with saidholding pawl whereby the range of movement of the latter may beregulated.

8. In a reaper switch mechanism, an automatic switch, a switch latchengageable therewith, mechanism for releasing said latch, and meansoperable by said switch upon release of said latch for permitting saidlatch releasing mechanism to be reset.

9. In a reaper switch mechanism, an automatic switch, a switch latchengageable therewith, step-by-step mechanism for releasing said latchfrom said switch, and automatic means for permitting the resetting ofsaid step-by-step mechanism controlled by the movement of said switch.

10. In a reaper switch mechanism, a spring-pressed switch, a switchlatch having an inclined surface engageable with the switch when thelatch is released, latch releasing mechanism, and means controlled bysaid latch for permitting the resetting of said releasing mechanism.

11. In a reaper switch, a switch latch comprising an elongated bodyportion, an adjustable member carried thereby and disposed at an anglethereto, a switch engaglng head carried on said body portion, and adownwardly and laterally extending arm carried by said body portionintermediate said adjustable member and said head.

12. In a reaper switch, a frame, a shaft journaled thereon, an indexsector fixed to said shaft, a switch latch pivoted to said shaft, andmeans whereby when said sector is moved said switch latch is rotatedabout its pivot.

13. In a reaper switch, a frame, a shaft journaled thereon, an indexsector fixed to said shaft, a switch latch pivoted to said shaft, meanswhereby when said sector is moved said switch latch is rotated about itspivot, and supplemental means for rotating said sector and therebyactuating said switch latch.

14. In a reaper switch, a frame, a spring pressed shaft journaledthereon, an index sector fixed to said shaft, a switch latch pivoted tosaid shaft, automatic means for intermittently actuating said sector andlatch, and means whereby the former may be rotated into engagement withsaid latch at any desired time.

15. In a reaper switch, a frame, a shaft journaled thereon, an indexsector carried on said shaft, a switch latch pivoted to said shaft andengageable by said sector, automatic intermittently operating means forthrowing the sector into engagement with said latch, means whereby theinterval be- .tor pivoted co-axially with said switch latch having aflange thereon engageable with the laterally and upwardly extendingportion of said detent.

17. In a reaper switch, a frame, a pivoted switch latch, a coaxiallydisposed pivoted index sector engageable with said latch, a reciprocablesector actuating pawl, resilient connections between said pawl andframe, a sector holding pawl, and means on said holding pawl forlimiting the movement of said actuating pawl by said resilientconnections.

18. In a reaper switch, a frame, a pivoted switch latch, a coaxiallydisposed pivoted index sector engageable with said latch, a sectoractuating pawl carried on said frame and having a slotted portion, aspring intermediate said pawl and said stand, and a sector holding pawlcarried by said frame movable in the slotted portion of said actuatingpawl.

19. In a reaper switch, a frame, a pivoted switch latch, a coaxiallydisposed pivoted index sector engageable with said latch, a sectoractuating pawl carried by said frame and having a slotted portionthereon, a

spring intermediate said pawl and said frame a holding pawl for saidsector movable in the slotted portion of said actuating pawl, and meanson said holding pawl for limiting the .movement of said actuating pawlby said spring.

20. In a reaper switch, a rake stand, an index sector carried thereon,an actuating pawl therefor, a bell crank pivoted on said stand connectedto said actuating pawl, and means intermediate said stand and pawl forlimiting a forward swinging movement of the latter relative to said bellcrank.

21. In a reaper switch, a rake stand, an index sector carried thereon,an actuating pawl therefor, a bell crank pivoted on said stand connectedto said actuating pawl, means intermediate said stand and pawl forlimiting a forward swinging movement of the latter relative to said bellcrank, a holding pawl for said sector, and cooperating means on saidpawl for limiting the movement of said actuating pawl.

22. In a reaper switch, a rake stand, a bell crank lever pivotedthereon, an index sector pivoted on said rake stand, a sector actuatingpawl engageable with said index sector and carried on said stand, aswitch latch pivoted coaxially with said sector and actuated thereby,and an adjustable connection intermediate said pawl and bell crankwhereby the throw of said pawl may be regulated.

23. In a reaper switch, a rake stand, a lever pivoted thereon, a rakedriving shaft actuating the same, an index sector journaled on saidstand, an actuating pawl for said sector, means connecting said pawl tosaid lever whereby the range of movement of the former may be regulated,and a sliding connection between said lever and the non-working end ofsaid pawl.

24. In a reaper switch, a rake stand, a shaft journaled thereon, anindex sector fixed to said shaft, a switch latch journaled on saidshaft, a sleeve journaled on said shaft, means whereby said sleeve maybe rotated relative to the shaft, means whereby the rotation of saidsleeve is imparted to said sector and latch, and means on said rakestand for limiting the rotation of said sleeve and sector.

25. In a reaper switch, a rake stand, a shaft rotatably mounted thereon,an index sector carried on said shaft, intermittently acting means foractuating the same, a sleeve journaled on said shaft, an operatingmember connected to said sleeve, means whereby the rotation of saidsleeve is imparted to said sector, and means independent of saidoperating member whereby said shaft may be rotated in oppositedirections.

26. A switch controlling mechanism for self-rake reapers having, incombination, a rake driving shaft, a rake controlling cam,

a pivoted switch forming part of said cam, automatically operativemechanism adapted to control an opening and closing movement of saidswitch, and means whereby the range of movement of said switch may beregulated.

27. A switch controlling mechanism for self-rake reapers having, incombination, a rake driving shaft, a rake controlling cam, a pivotedswitch forming part of said cam, automatically operative mechanismadapted to control an opening and closing movement of said switch, andan adjustable screw received by said cam and engaging with said switchwhereby the range of movement of said switch may be regulated.

28. In a reaper switch, a cam track having depending lugs, a shaftjournaled therein, a pivoted cam switch, a switch latch havingbifurcated arms pivoted to said shaft, an index sector fixed to saidshaft intermediate said arms, means for actuating said sector, a sleevejournaled on said shaft at one side of said arms, operative connectionsbetween said sleeve and sector and said sleeve and stand, a resilientconnection between said shaft and cam, and means independent of saidsleeve whereby said shaft may be rotated.

29. A switch controlling mechanism for self-rake reapers having, incombination, a rake driving shaft, a rake controlling cam, a pivotedswitch forming part of said cam, a multiple throw cam secured to saidrake driving shaft, a bell crank lever pivotally connected with a fixedpart of the mechanism, having one arm thereof provided with a rollerthat engages with said multiple throw cam and the remaining arm thereofhaving connected therewith an eye bolt, a transversely arranged rockshaft journaled inbearings carried by said rake controlling cam, atoothed index sector secured to said rock shaft, a reciprocating pawlhaving one end adapted to engage with said toothed index sector and theopposite end thereof connected with said eye bolt, and a switch latchpivotally mounted upon said rock shaft and adapted to engage said switchin a manner to lock said switch in a closed position, said index sectorbeing adapted to engage with said latch in a manner to release it fromengagement with said switch.

30. A switch controlling mechanism for self-rake reapers having, incombination, a vertically arranged rake driving shaft, a rakecontrolling cam mounted upon said shaft, a pivoted rake switch formingpart of said controlling cam and normally held in an open position bymeans of a spring, a multiple throw cam secured to said rake drivingshaft, a bell crank lever pivotally connected with a fixed part of themechanism, having one arm thereof provided with a roller that engageswith said multiple throw cam, an eye bolt adjustably connected with theremaining arm of said bell crank lever, a transversely arranged rockshaft journaled in bearings carried by said rake controlling cam, atoothed index sector secured to said rock shaft, a reciprocating pawlmember having one end thereof adapted to engage with said toothedsector, and the opposite end thereof connected with said eye bolt, aswitch latch loosely mounted upon said rock shaft and adapted to engagesaid switch in a manner whereby said switch is locked in a closedposition, said index sector being adapted to engage with said latch in amanner to release it from said switch, a gravity pawl engaging with saidindex sector in a manner preventing a retrograde movement thereof, saidgravity pawl engaging with said reciprocating pawl in a manner torelease said reciprocating pawl from engagement with said sector whensaid gravity pawl is raised, and means carried by said switch latchoperative to raise said gravity pawl.

LUD HOLLAND-LETZ. Witnesses:

C. G. GRzEooRzEWsKI, E. L. BAcoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

